Carbon Disulfide

Title: Carbon Disulfide
CAS Registry Number: 75-15-0
Additional Names: Carbon bisulfide; dithiocarbonic anhydride
Molecular Formula: CS2
Molecular Weight: 76.14
Percent Composition: C 15.77%, S 84.23%
Literature References: Minute amounts occur in coal tar and in crude petroleum. Prepd on an industrial scale by heating charcoal with vaporized sulfur; from sulfur and natural gas: Faith, Keyes & Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 224-229. Laboratory purification: Glemser in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 652. Review of production and uses: Bushell, Chem. Ind. (London) 1961, 1465; R. W. Timmerman in Kirk-Othmer Encyclopedia of Chemical Technology vol. 4 (Wiley-Interscience, New York, 3rd ed., 1978) pp 742-757; of toxicology and human exposure: Toxicological Profile for Carbon Disulfide (PB97-121073, 1996) 252 pp.
Properties: Highly refractive, mobile, very flammable liq. Poisonous! The purest distillates ever obtained are reported to have a sweet, pleasing, and ethereal odor, while the usual commercial and reagent grades are foul smelling. Dec on standing for a long time. Burns with a blue flame to CO2 and SO2. Acute fire and explosion hazard, can be ignited by hot steam pipes. Flash pt, closed cup: -30°C. Ignition pt: 100°. Explosive range: 1 to 50% (v/v) in air. d40 1.29272; d415 1.27055; d420 1.2632; d430 1.24817. Vapors sink to the ground. Vapor density 2.67 (air = 1). mp -111.6°. bp1.0 -73.8°; bp10 -44.7°; bp100 -5.1°; bp400 28.0°; bp760 46.5°; bp(2 atm) 69.1°; bp(5 atm) 104.8°. Crit temp 280.0°; crit press. 72.9 atm. nD15 1.63189; nD20.1 1.62803; n23.5 1.62543. Surface tension at 20°: 32.25. Coefficient of viscosity at 20°: 0.363. Heat of vaporization at bp: 84.1 cal/g. Heat of fusion: 1.049 kcal/mole. Heat capacity at 24.3°: 18.17 cal/mole/deg: Brown, Manov, J. Am. Chem. Soc. 59, 500 (1937). Ebullioscopic constant: 2.35°. Dielectric constant at low frequencies: 2.641. Dipole moment: 0.0. Soly in water at 20°: 0.294%. Soly of water in CS2: <0.005%. Azeotrope with water bp 42.6°, contains 97.2% CS2. Misc with anhydr methanol, ethanol, ether, benzene, chloroform, carbon tetrachloride, oils. Can be stored in iron, aluminum, glass, porcelain, Teflon.
Melting point: mp -111.6°
Boiling point: bp1.0 -73.8°; bp10 -44.7°; bp100 -5.1°; bp400 28.0°; bp760 46.5°; bp(2 atm) 69.1°; bp(5 atm) 104.8°; bp 42.6°
Flash point: Flash pt, closed cup: -30°C
Index of refraction: nD15 1.63189; nD20.1 1.62803; n23.5 1.62543
Density: d40 1.29272; d415 1.27055; d420 1.2632; d430 1.24817
CAUTION: Poisoning usually occurs from inhalation but also may be caused by ingestion and skin absorption. Direct contact with liquid or concentrated vapors may cause irritation of skin, eyes, mucous membranes; eye and skin burns; dermatitis. Potential symptoms of acute overexposure are headache, garlicky breath, nausea, vomiting, diarrhea, fatigue, weakness, vertigo, dizziness, poor sleep; CNS depression with respiratory paralysis. Potential symptoms of chronic overexposure are nervousness, anorexia, weight loss; psychosis; polyneuropathy; Parkinson-like syndrome; ocular changes; coronary heart disease; gastritis; kidney and liver injury; reproductive effects; marked psychic disturbances ranging from extreme irritability to mania with hallucinations, tremors, auditory and visual disturbances. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 52; Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) Section III, pp 90-93.
Use: In the manuf of rayon, carbon tetrachloride, xanthogenates, soil disinfectants, electronic vacuum tubes. Solvent for phosphorus, sulfur, selenium, bromine, iodine, fats, resins, rubbers.
Carbon Monoxide Carbon Nitride Carbon Suboxide Carbon Tetrachloride Carbon Tetrafluoride

Carbon disulfide
Carbon disulfide
Carbon-disulfide-3D-vdW.png
Identifiers
CAS number 75-15-0 YesY
PubChem 6348
ChemSpider 6108 YesY
UNII S54S8B99E8 YesY
EC number 200-843-6
UN number 1131
KEGG C19033 N
ChEBI CHEBI:23012 YesY
RTECS number FF6650000
Jmol-3D images Image 1
Properties
Molecular formula CS2
Molar mass 76.139 g/mol
Appearance colorless liquid
impure: light-yellow
Odor chloroform (pure)
foul (commercial)
Density 1.261 g/cm3
Melting point −110.8 °C; −167.4 °F; 162.3 K
Boiling point 46.3 °C; 115.3 °F; 319.4 K
Solubility in water 2.9 g/kg (20 °C)
Solubility soluble in alcohol, ether, benzene, oil. chloroform, CCl4
Refractive index (nD) 1.6295
Viscosity 0.363
Structure
Molecular shape Linear
Dipole moment zero
Hazards
MSDS External MSDS
EU Index 006-003-00-3
EU classification Toxic T, Irritant Xi, Flammable F
R-phrases R11, R36/38, R48/23, R62, R63
S-phrases (S1/2), S16, S33, S36/37, S45
NFPA 704
NFPA 704.svg
4
3
0
Flash point −30 °C; −22 °F; 243 K
Autoignition temperature 90 °C; 194 °F; 363 K
Explosive limits 1.3–50%
LD50 3188 mg/kg
Related compounds
Related compounds Carbon dioxide
Carbonyl sulfide
Carbon diselenide
Supplementary data page
Structure and
properties
n, εr, etc.
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Carbon disulfide is a colorless volatile liquid with the formula CS2. The compound is used frequently as a building block in organic chemistry as well as an industrial and chemical non-polar solvent. It has an "ether-like" odor, but commercial samples are typically contaminated with foul-smelling impurities, such as carbonyl sulfide.[1]